 /* 悬浮窗（模态框）样式 */
        .modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5); /* 半透明遮罩 */
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        /* 悬浮窗显示状态 */
        .modal.show {
            opacity: 1;
            visibility: visible;
        }

        .modal-content {
            width: 90%;
            max-width: 500px;
            background-color: #fff;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(30, 64, 175, 0.2);
            overflow: hidden;
            transform: translateY(-20px);
            transition: transform 0.3s ease;
        }

        .modal.show .modal-content {
            transform: translateY(0);
        }

        /* 悬浮窗头部 */
        .modal-header {
            background-color: #4a6cf7; 
            color: #fff;
            padding: 16px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .modal-title {
            font-size: 18px;
            font-weight: 600;
        }

        .close-btn {
            background: none;
            border: none;
            color: #fff;
            font-size: 20px;
            cursor: pointer;
            transition: color 0.2s ease;
        }

        .close-btn:hover {
            color: #e0e7ff;
        }

        /* 悬浮窗内容区 */
        .modal-body {
            padding: 24px;
            color: #334155;
        }

        .modal-detail {
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .modal-detail label {
            font-weight: 600;
            color:  #4a6cf7;
            margin-right: 8px;
        }

        .modal-desc {
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid #e0e7ff;
            font-size: 14px;
            color: #475569;
            line-height: 1.7;
        }